Mold



C. P. W'HISLER.

MOLD. APPLIcATIoN FILED MAR. 24, 1919.

LOWER PLAf/V 0F PREIS@ ,/I I I I I I I I I I I I I |f\\ I l I I I I I" I I I I I I Chmmyla' dem /y M y UNITED STATES PATENT OFFICE.;

CHAUNOY PURLEE WHISLER, OF AKRON, OHIO, ASSIGNOR T MILLER RUBBER COMPANY, OF AKRON, OHIO, A CORPORATION OF lOHIO.

MOLD.

Specification of Letters Patent. Patented J 11119 15,1920.

Application led March 24, 1919. Seria1 No. 284,712.

Y To' all whom z't may concern.'

Be it known that I, CHAUNCY P. WHISLER,

a citizen of the United States, resident of- Akron, Ohio, have invented certain new and useful Improvements in Molds, of which the following is a specification.

My present invention relates to improvement in molds and is designed more especially for use in connection with molds used for vulcanizing rubber articles; though not limited in its application to this specific use.

' Heretofore such molds have been made of a plurality of independent and unconnected parts and ditliculty has been experienced with them, not only in the misplacing of parts, but thedragging of one part across the face of another, vor the dropping of some thereon thereby scoring the molds resulting in defective goods.

The present invention aims to avoid this difficulty and to this end comprises the novel construction and arrangement and combination of parts hereinafter described and defined by the appended claims, an embodiment of my invention being illustrated in the accompanying drawing in which,

Figure l is a side elevation partly in section of a three part mold constructed in accordance with my invention and, v

Fig. 2 is a top plan view and Fig. 3 is an end view.

Referring by reference characters to this drawing which shows as a convenient example a mold for forming rubber heels for boots and shoes, the numeral l designates a lower mold section, 2r an upper mold section, and 3 an intermediate mold section or center plate.

As is customary with such mold sections or plates dowel pins are provided carried by oneplate or plates and entering corresponding openings in the adjacent plate or plates to insure perpendicular movement inthe closmg of the molds and also to secure proper alinement of the mold cavities. In the form shown the mold section or plate 1 has dowel pins 1aL which enter corresponding recesses 3a in the center plate or sectionfand the upper plate 2 has dowel pins 2b which enter similar recesses 3" in the section or plate 3.

Plate 1 has a pair of ears or lugs 1c which are connected by loose hinge connections with corresponding lugs 2c on the upper section,

the hinge connection serving to permanently connect and unite such parts and the loose or lost motion connections affording the necessary rectilinear movement perpendicular to the plane of the mold to' allow the dowel pins to enter and leave their coacting recesses.

In the preferred embodiment shown In tne drawings the loose hinge connection is provided by having hinge pins c on one of the lugs (for example lc') engaging vertically elongated slots c in the other member, the slots being of suflicient length to allow the bodily vertical movement of the upper section to clear the pins from the recesses whereafter the section may be swung back out of the way.

In a similar manner the intermediate or central section 3 may be provided with lugs 3 having slots c2 to receive pins @Non ears 1d on the opposite side of the lower section, so that the parts 2 and 3 swing outwardly in opposite directions. l

What I claim is:

1. A mold having a plurality of parts hinged together, one of said parts having dowel pins perpendicular/to the faceof the mold part and the other corresponding openings to receive said dowel pins-said hinge having a lost motion connection permitting a rectilinear movement of the parts relative 'plane of the mold, and the other set of llugs having hinge'y pins seated in'said recesses.

3. A mold comprising a pair of sections hinged together, one of said sections having recesses perpendicular to the plane of the mold, perpendicular dowel pins carried by the other part coacting with said recesses,

` and a hinge connection between said sections having a lost motion sufiicient to enable one section to be lifted vertically to clear the pins from theI recesses prior to swinging the secsection, a top section and an intermediate tion on its hinge. section, Said intermediate and top sections 10 4. A three part mold comprising a bottom being hinged respectively to opposite sides of member, a top member, and an intermediate the bottom section by 10st motion hinge con- 5 member, said top and intermediate members nections.

being independently -hinged. to said bottom In testimony whereof I aifx my signature.

section by 10st motion hinge connections.

5. A three part mold comprising a bottom CHAUNCY PURLEE WHISLER. 

